BOSTON (AP) — Wesley Korir won the Boston Marathon on Monday in a heat-slowed unofficial time of 2 hours, 12 minutes, 40 seconds.

A year after Geoffrey Mutai ran the fastest marathon in history to win here, Korir won the second-slowest Boston race since 1985. Mutai dropped out after 18 miles with cramps as temperatures rose into the 80s on the 26.2-mile trek from Hopkinton to Copley Square.